| Very large specimen with both librigens. This Ectillaenus is one of the largest and one of the pest preserved ones that I know from Great Brittain. | |||
Location:  | Minsterley ,Shropshire,UK | ||
| Size Trilobite: | about 46 mm long | ||
| Age: | Ordovizian, Llanvirn Didymograptus artus-Biozone (about 470 mill. y.o.) | ||